Is my drive able to burn double layer disc

My burner is a sony rw dw d22a. I wanted to know if I am able to burn double layer disc and if not is there an update to or do i need to buy another burner. thank you

 

Go here:

http://reviews.cnet.com/dvd-drives/sony-dw-d22a-dvd/4505-3212_7-31206077.html

 

I went that website and there was a question mark. how do i find the model number?

 

I didn't notice the question mark before. It clearly denotes only +R DL.
More research ahead.

No question mark here:

http://shopping.yahoo.com/p:Sony DW...5YnR2BF9TAzk2NjMyOTA3BHNlYwNmZWVkBHNsawNjb21w

 

thanks a lot, so what does the "rw" stand for?

 

Rewritable